Assemblage is a term with uses in several fields:
- Assemblage (art)
- Assemblage (composition)
- Assemblage (archaeology)
- Assemblage (philosophy), a philosophical concept developed by Gilles Deleuze and Félix Guattari
- Fossil assemblage also known as Assemblage zone
- Species assemblage (biology), refers to all of the various species that exist in a particular habitat.
- A New Philosophy of Society: Assemblage Theory and Social Complexity
- Assemblage 23, a futurepop/EBM group
- Assemblage (album), a compilation album by the British band Japan
- Assemblage (journal), a defunct architectural journal
- Assemblage (real estate): see Plottage.